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angular-multi-select.js
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/*
* Angular JS Multi Select
* Creates a dropdown-like button with checkboxes.
*
* Project started on: Tue, 14 Jan 2014 - 5:18:02 PM
* Current version: 2.0.1
*
* Released under the MIT License
* --------------------------------------------------------------------------------
* The MIT License (MIT)
*
* Copyright (c) 2014 Ignatius Steven (https://github.com/isteven)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
* --------------------------------------------------------------------------------
*/
angular.module( 'multi-select', ['ng'] ).directive( 'multiSelect' , [ '$sce', '$timeout', function ( $sce, $timeout ) {
return {
restrict:
'AE',
replace:
true,
scope:
{
// models
inputModel : '=',
outputModel : '=',
// settings based on attribute
buttonLabel : '@',
defaultLabel : '@',
directiveId : '@',
helperElements : '@',
isDisabled : '=',
itemLabel : '@',
maxLabels : '@',
orientation : '@',
selectionMode : '@',
// settings based on input model property
tickProperty : '@',
disableProperty : '@',
groupProperty : '@',
maxHeight : '@',
// callbacks
onClose : '&',
onItemClick : '&',
onOpen : '&'
},
template:
'<span class="multiSelect inlineBlock">' +
'<button type="button" class="button multiSelectButton" ng-click="toggleCheckboxes( $event ); refreshSelectedItems(); refreshButton();" ng-bind-html="varButtonLabel">' +
'</button>' +
'<div class="checkboxLayer">' +
'<div class="helperContainer" ng-if="displayHelper( \'filter\' ) || displayHelper( \'all\' ) || displayHelper( \'none\' ) || displayHelper( \'reset\' )">' +
'<div class="line" ng-if="displayHelper( \'all\' ) || displayHelper( \'none\' ) || displayHelper( \'reset\' )">' +
'<button type="button" ng-click="select( \'all\', $event );" class="helperButton" ng-if="!isDisabled && displayHelper( \'all\' )"> ✓ Select All</button> ' +
'<button type="button" ng-click="select( \'none\', $event );" class="helperButton" ng-if="!isDisabled && displayHelper( \'none\' )"> × Select None</button>' +
'<button type="button" ng-click="select( \'reset\', $event );" class="helperButton" ng-if="!isDisabled && displayHelper( \'reset\' )" style="float:right">↶ Reset</button>' +
'</div>' +
'<div class="line" style="position:relative" ng-if="displayHelper( \'filter\' )">' +
'<input placeholder="Search..." type="text" ng-click="select( \'filter\', $event )" ng-model="inputLabel.labelFilter" ng-change="updateFilter();$scope.getFormElements();" class="inputFilter" />' +
'<button type="button" class="clearButton responsive" ng-click="inputLabel.labelFilter=\'\';updateFilter();prepareGrouping();prepareIndex();select( \'clear\', $event )">×</button> ' +
'</div>' +
'</div>' +
'<div class="checkBoxContainer" style="{{setHeight();}}">' +
'<div ng-repeat="item in filteredModel | filter:removeGroupEndMarker" class="multiSelectItem"' +
'ng-class="{selected: item[ tickProperty ], horizontal: orientationH, vertical: orientationV, multiSelectGroup:item[ groupProperty ], disabled:itemIsDisabled( item )}"' +
'ng-click="syncItems( item, $event, $index );"' +
'ng-mouseleave="removeFocusStyle( tabIndex );">' +
'<div class="acol" ng-if="item[ spacingProperty ] > 0" ng-repeat="i in numberToArray( item[ spacingProperty ] ) track by $index"> </div>' +
'<div class="acol">' +
'<label>' +
'<input class="checkbox focusable" type="checkbox" ng-disabled="itemIsDisabled( item )" ng-checked="item[ tickProperty ]" ng-click="syncItems( item, $event, $index )" />' +
'<span ng-class="{disabled:itemIsDisabled( item )}" ng-bind-html="writeLabel( item, \'itemLabel\' )"></span>' +
'</label>' +
'</div>' +
' ' +
'<span class="tickMark" ng-if="item[ groupProperty ] !== true && item[ tickProperty ] === true">✔</span>' +
'</div>' +
'</div>' +
'</form>' +
'</div>' +
'</span>',
link: function ( $scope, element, attrs ) {
$scope.backUp = [];
$scope.varButtonLabel = '';
$scope.scrolled = false;
$scope.spacingProperty = '';
$scope.indexProperty = '';
$scope.checkBoxLayer = '';
$scope.orientationH = false;
$scope.orientationV = true;
$scope.filteredModel = [];
$scope.inputLabel = { labelFilter: '' };
$scope.selectedItems = [];
$scope.formElements = [];
$scope.tabIndex = 0;
$scope.clickedItem = null;
prevTabIndex = 0;
helperItems = [];
helperItemsLength = 0;
// If user specify a height, call this function
$scope.setHeight = function() {
if ( typeof $scope.maxHeight !== 'undefined' ) {
return 'max-height: ' + $scope.maxHeight + '; overflow-y:scroll';
}
}
// A little hack so that AngularJS ng-repeat can loop using start and end index like a normal loop
// http://stackoverflow.com/questions/16824853/way-to-ng-repeat-defined-number-of-times-instead-of-repeating-over-array
$scope.numberToArray = function( num ) {
return new Array( num );
}
$scope.updateFilter = function()
{
// we check by looping from end of array
$scope.filteredModel = [];
var i = 0;
if ( typeof $scope.inputModel === 'undefined' ) {
return [];
}
for( i = $scope.inputModel.length - 1; i >= 0; i-- ) {
// if it's group end
if ( typeof $scope.inputModel[ i ][ $scope.groupProperty ] !== 'undefined' && $scope.inputModel[ i ][ $scope.groupProperty ] === false ) {
$scope.filteredModel.push( $scope.inputModel[ i ] );
}
// if it's data
var gotData = false;
if ( typeof $scope.inputModel[ i ][ $scope.groupProperty ] === 'undefined' ) {
for (var key in $scope.inputModel[ i ] ) {
// if filter string is in one of object property
if ( typeof $scope.inputModel[ i ][ key ] !== 'boolean' && typeof $scope.inputModel[i][key] !== 'undefined' && String( $scope.inputModel[ i ][ key ] ).toUpperCase().indexOf( $scope.inputLabel.labelFilter.toUpperCase() ) >= 0 ) {
gotData = true;
break;
}
}
if ( gotData === true ) {
// push
$scope.filteredModel.push( $scope.inputModel[ i ] );
}
}
// if it's group start
if ( typeof $scope.inputModel[ i ][ $scope.groupProperty ] !== 'undefined' && $scope.inputModel[ i ][ $scope.groupProperty ] === true ) {
if ( typeof $scope.filteredModel[ $scope.filteredModel.length - 1 ][ $scope.groupProperty ] !== 'undefined' && $scope.filteredModel[ $scope.filteredModel.length - 1 ][ $scope.groupProperty ] === false ) {
$scope.filteredModel.pop();
}
else {
$scope.filteredModel.push( $scope.inputModel[ i ] );
}
}
}
$scope.filteredModel.reverse();
$timeout( function() {
$scope.getFormElements();
},0);
};
// List all the input elements.
// This function will be called everytime the filter is updated. Not good for performance, but oh well..
$scope.getFormElements = function() {
$scope.formElements = [];
var thisElement = element[0],
theseChecks =thisElement.getElementsByClassName('checkBoxContainer'),
items = theseChecks[0].getElementsByTagName('input');
$scope.formElements = items;
};
// check if an item has $scope.groupProperty (be it true or false)
$scope.isGroupMarker = function( item , type ) {
if ( typeof item[ $scope.groupProperty ] !== 'undefined' && item[ $scope.groupProperty ] === type ) return true;
return false;
}
$scope.removeGroupEndMarker = function( item ) {
if ( typeof item[ $scope.groupProperty ] !== 'undefined' && item[ $scope.groupProperty ] === false ) return false;
return true;
}
// Show or hide a helper element
$scope.displayHelper = function( elementString ) {
if ( attrs.selectionMode && $scope.selectionMode.toUpperCase() === 'SINGLE' ) {
switch( elementString.toUpperCase() ) {
case 'ALL':
return false;
break;
case 'NONE':
return false;
break;
case 'RESET':
if ( typeof attrs.helperElements === 'undefined' ) {
return true;
}
else if ( attrs.helperElements && $scope.helperElements.toUpperCase().indexOf( 'RESET' ) >= 0 ) {
return true;
}
break;
case 'FILTER':
if ( typeof attrs.helperElements === 'undefined' ) {
return true;
}
if ( attrs.helperElements && $scope.helperElements.toUpperCase().indexOf( 'FILTER' ) >= 0 ) {
return true;
}
break;
default:
break;
}
return false;
}
else {
if ( typeof attrs.helperElements === 'undefined' ) {
return true;
}
if ( attrs.helperElements && $scope.helperElements.toUpperCase().indexOf( elementString.toUpperCase() ) >= 0 ) {
return true;
}
return false;
}
}
// call this function when an item is clicked
$scope.syncItems = function( item, e, ng_repeat_index ) {
e.preventDefault();
e.stopPropagation();
// if it's globaly disabled, then don't do anything
if ( typeof attrs.disableProperty !== 'undefined' && item[ $scope.disableProperty ] === true ) {
return false;
}
// don't change disabled items
if ( typeof attrs.isDisabled !== 'undefined' && $scope.isDisabled === true ) {
return false;
}
// we don't care about end of group markers
if ( typeof item[ $scope.groupProperty ] !== 'undefined' && item[ $scope.groupProperty ] === false ) {
return false;
}
index = $scope.filteredModel.indexOf( item );
// process items if the start of group marker is clicked ( only for multiple selection! )
// if, in a group, there are items which are not selected, then they all will be selected
// if, in a group, all items are selected, then they all will be de-selected
if ( typeof item[ $scope.groupProperty ] !== 'undefined' && item[ $scope.groupProperty ] === true ) {
if ( attrs.selectionMode && $scope.selectionMode.toUpperCase() === 'SINGLE' ) {
return false;
}
var i,j,k;
var startIndex = 0;
var endIndex = $scope.filteredModel.length - 1;
var tempArr = [];
var nestLevel = 0;
for( i = index ; i < $scope.filteredModel.length ; i++) {
if ( nestLevel === 0 && i > index )
{
break;
}
// if group start
if ( typeof $scope.filteredModel[ i ][ $scope.groupProperty ] !== 'undefined' && $scope.filteredModel[ i ][ $scope.groupProperty ] === true ) {
// To cater multi level grouping
if ( tempArr.length === 0 ) {
startIndex = i + 1;
}
nestLevel = nestLevel + 1;
}
// if group end
else if ( typeof $scope.filteredModel[ i ][ $scope.groupProperty ] !== 'undefined' && $scope.filteredModel[ i ][ $scope.groupProperty ] === false ) {
nestLevel = nestLevel - 1;
// cek if all are ticked or not
if ( tempArr.length > 0 && nestLevel === 0 ) {
var allTicked = true;
endIndex = i;
for ( j = 0; j < tempArr.length ; j++ ) {
if ( typeof tempArr[ j ][ $scope.tickProperty ] !== 'undefined' && tempArr[ j ][ $scope.tickProperty ] === false ) {
allTicked = false;
break;
}
}
if ( allTicked === true ) {
for ( j = startIndex; j <= endIndex ; j++ ) {
if ( typeof $scope.filteredModel[ j ][ $scope.groupProperty ] === 'undefined' ) {
if ( typeof attrs.disableProperty === 'undefined' ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = false;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = false;
}
else if ( $scope.filteredModel[ j ][ $scope.disableProperty ] !== true ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = false;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = false;
}
}
}
}
else {
for ( j = startIndex; j <= endIndex ; j++ ) {
if ( typeof $scope.filteredModel[ j ][ $scope.groupProperty ] === 'undefined' ) {
if ( typeof attrs.disableProperty === 'undefined' ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = true;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = true;
}
else if ( $scope.filteredModel[ j ][ $scope.disableProperty ] !== true ) {
$scope.filteredModel[ j ][ $scope.tickProperty ] = true;
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ j ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = true;
}
}
}
}
}
}
// if data
else {
tempArr.push( $scope.filteredModel[ i ] );
}
}
}
// single item click
else {
// If it's single selection mode
if ( attrs.selectionMode && $scope.selectionMode.toUpperCase() === 'SINGLE' ) {
// first, set everything to false
for( i=0 ; i < $scope.filteredModel.length ; i++) {
$scope.filteredModel[ i ][ $scope.tickProperty ] = false;
}
for( i=0 ; i < $scope.inputModel.length ; i++) {
$scope.inputModel[ i ][ $scope.tickProperty ] = false;
}
// then set the clicked item to true
$scope.filteredModel[ index ][ $scope.tickProperty ] = true;
$scope.toggleCheckboxes( e );
}
// Multiple
else {
$scope.filteredModel[ index ][ $scope.tickProperty ] = !$scope.filteredModel[ index ][ $scope.tickProperty ];
var $target = angular.element(e.target);
if ($target.attr('type') === 'checkbox') {
$timeout(function () {
$target.prop('checked', item[ $scope.tickProperty ]);
});
}
}
// we refresh input model as well
inputModelIndex = $scope.filteredModel[ index ][ $scope.indexProperty ];
$scope.inputModel[ inputModelIndex ][ $scope.tickProperty ] = $scope.filteredModel[ index ][ $scope.tickProperty ];
}
$scope.clickedItem = angular.copy( item );
// We update the index here
prevTabIndex = $scope.tabIndex;
$scope.tabIndex = ng_repeat_index + helperItemsLength;
// Set focus on the hidden checkbox
e.target.focus();
// set & remove CSS style
$scope.removeFocusStyle( prevTabIndex );
$scope.setFocusStyle( $scope.tabIndex );
}
// update $scope.selectedItems
// this variable is used in $scope.outputModel and to refresh the button label
$scope.refreshSelectedItems = function() {
$scope.selectedItems = [];
angular.forEach( $scope.inputModel, function( value, key ) {
if ( typeof value !== 'undefined' ) {
if ( typeof value[ $scope.groupProperty ] === 'undefined' ) {
if ( value[ $scope.tickProperty ] === true ) {
$scope.selectedItems.push( value );
}
}
}
});
}
// refresh output model as well
$scope.refreshOutputModel = function() {
if ( typeof attrs.outputModel !== 'undefined' ) {
$scope.outputModel = angular.copy( $scope.selectedItems );
angular.forEach( $scope.outputModel, function( value, key ) {
// remove the index number and spacing number from output model
delete value[ $scope.indexProperty ];
delete value[ $scope.spacingProperty ];
});
}
}
// refresh button label
$scope.refreshButton = function() {
$scope.varButtonLabel = '';
ctr = 0;
// refresh button label...
if ( $scope.selectedItems.length === 0 ) {
// https://github.com/isteven/angular-multi-select/pull/19
$scope.varButtonLabel = ( typeof $scope.defaultLabel !== 'undefined' ) ? $scope.defaultLabel : 'None selected';
}
else {
var tempMaxLabels = $scope.selectedItems.length;
if ( typeof $scope.maxLabels !== 'undefined' && $scope.maxLabels !== '' ) {
tempMaxLabels = $scope.maxLabels;
}
// if max amount of labels displayed..
if ( $scope.selectedItems.length > tempMaxLabels ) {
$scope.more = true;
}
else {
$scope.more = false;
}
angular.forEach( $scope.selectedItems, function( value, key ) {
if ( typeof value !== 'undefined' ) {
if ( ctr < tempMaxLabels ) {
$scope.varButtonLabel += ( $scope.varButtonLabel.length > 0 ? '</div>, <div class="buttonLabel">' : '<div class="buttonLabel">') + $scope.writeLabel( value, 'buttonLabel' );
}
ctr++;
}
});
if ( $scope.more === true ) {
// https://github.com/isteven/angular-multi-select/pull/16
if (tempMaxLabels > 0) {
$scope.varButtonLabel += ', ... ';
}
$scope.varButtonLabel += '(Total: ' + $scope.selectedItems.length + ')';
}
}
$scope.varButtonLabel = $sce.trustAsHtml( $scope.varButtonLabel + '<span class="caret"></span>' );
}
// Check if a checkbox is disabled or enabled. It will check the granular control (disableProperty) and global control (isDisabled)
// Take note that the granular control has higher priority.
$scope.itemIsDisabled = function( item ) {
if ( typeof attrs.disableProperty !== 'undefined' && item[ $scope.disableProperty ] === true ) {
return true;
}
else {
if ( $scope.isDisabled === true ) {
return true;
}
else {
return false;
}
}
}
// A simple function to parse the item label settings
$scope.writeLabel = function( item, type ) {
var label = '';
var temp = $scope[ type ].split( ' ' );
angular.forEach( temp, function( value2, key2 ) {
if ( typeof value2 !== 'undefined' ) {
angular.forEach( item, function( value1, key1 ) {
if ( key1 == value2 ) {
label += ' ' + value1;
}
});
}
});
if ( type.toUpperCase() === 'BUTTONLABEL' ) {
return label;
}
return $sce.trustAsHtml( label );
}
// UI operations to show/hide checkboxes based on click event..
$scope.toggleCheckboxes = function( e ) {
// We grab the checkboxLayer
$scope.checkBoxLayer = element.children()[1];
// We grab the button
clickedEl = element.children()[0];
// Just to make sure.. had a bug where key events were recorded twice
angular.element( document ).unbind( 'click', $scope.externalClickListener );
angular.element( document ).unbind( 'keydown', $scope.keyboardListener );
// clear filter
$scope.inputLabel.labelFilter = '';
$scope.updateFilter();
// close if ESC key is pressed.
if ( e.keyCode === 27 ) {
angular.element( $scope.checkBoxLayer ).removeClass( 'show' );
angular.element( clickedEl ).removeClass( 'buttonClicked' );
angular.element( document ).unbind( 'click', $scope.externalClickListener );
angular.element( document ).unbind( 'keydown', $scope.keyboardListener );
// clear the focused element;
$scope.removeFocusStyle( $scope.tabIndex );
// close callback
$scope.onClose( { data: element } );
// Add focus to element on close
element.find('.multiSelectButton').focus();
return true;
}
// The idea below was taken from another multi-select directive - https://github.com/amitava82/angular-multiselect
// His version is awesome if you need a more simple multi-select approach.
// close
if ( angular.element( $scope.checkBoxLayer ).hasClass( 'show' )) {
angular.element( $scope.checkBoxLayer ).removeClass( 'show' );
angular.element( clickedEl ).removeClass( 'buttonClicked' );
angular.element( document ).unbind( 'click', $scope.externalClickListener );
angular.element( document ).unbind( 'keydown', $scope.keyboardListener );
// clear the focused element;
$scope.removeFocusStyle( $scope.tabIndex );
// close callback
$scope.onClose( { data: element } );
}
// open
else
{
helperItems = [];
helperItemsLength = 0;
angular.element( $scope.checkBoxLayer ).addClass( 'show' );
angular.element( clickedEl ).addClass( 'buttonClicked' );
angular.element( document ).bind( 'click', $scope.externalClickListener );
angular.element( document ).bind( 'keydown', $scope.keyboardListener );
// to get the initial tab index, depending on how many helper elements we have.
// priority is to always focus it on the input filter
$scope.getFormElements();
$scope.tabIndex = 0;
var helperContainer = angular.element( element[ 0 ].querySelector( '.helperContainer' ) )[0];
if ( typeof helperContainer !== 'undefined' ) {
for ( i = 0; i < helperContainer.getElementsByTagName( 'BUTTON' ).length ; i++ ) {
helperItems[ i ] = helperContainer.getElementsByTagName( 'BUTTON' )[ i ];
}
helperItemsLength = helperItems.length + helperContainer.getElementsByTagName( 'INPUT' ).length;
}
// focus on the filter element on open.
//if ( element[ 0 ].querySelector( '.inputFilter' ) ) {
// element[ 0 ].querySelector( '.inputFilter' ).focus();
// $scope.tabIndex = $scope.tabIndex + helperItemsLength - 2;
// }
// if there's no filter then just focus on the first checkbox item
//else {
// $scope.formElements[ $scope.tabIndex ].focus();
//}
// note: in our project we just want to focus on checks.
$scope.formElements[ $scope.tabIndex ].focus();
$scope.setFocusStyle($scope.tabIndex);
// also, we moved the .helperContainer below the inputs, so we don't need to offset the length
helperItemsLength = 0;
// open callback
$scope.onOpen( { data: element } );
}
}
// handle clicks outside the button / multi select layer
$scope.externalClickListener = function( e ) {
targetsArr = element.find( e.target.tagName );
for (var i = 0; i < targetsArr.length; i++) {
if ( e.target == targetsArr[i] ) {
return;
}
}
angular.element( $scope.checkBoxLayer.previousSibling ).removeClass( 'buttonClicked' );
angular.element( $scope.checkBoxLayer ).removeClass( 'show' );
angular.element( document ).unbind( 'click', $scope.externalClickListener );
angular.element( document ).unbind( 'keydown', $scope.keyboardListener );
// close callback
$timeout( function() {
$scope.onClose( { data: element } );
}, 0 );
}
// traverse up to find the button tag
// http://stackoverflow.com/questions/7332179/how-to-recursively-search-all-parentnodes
$scope.findUpTag = function ( el, tag, className ) {
while ( el.parentNode ) {
el = el.parentNode;
if ( typeof el.tagName !== 'undefined' ) {
if ( el.tagName.toUpperCase() === tag.toUpperCase() && el.className.indexOf( className ) > -1 ) {
return el;
}
}
}
return null;
}
// select All / select None / reset buttons
$scope.select = function( type, e ) {
helperIndex = helperItems.indexOf( e.target );
$scope.tabIndex = helperIndex;
switch( type.toUpperCase() ) {
case 'ALL':
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value !== 'undefined' && value[ $scope.disableProperty ] !== true ) {
if ( typeof value[ $scope.groupProperty ] === 'undefined' ) {
value[ $scope.tickProperty ] = true;
}
}
});
break;
case 'NONE':
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value !== 'undefined' && value[ $scope.disableProperty ] !== true ) {
if ( typeof value[ $scope.groupProperty ] === 'undefined' ) {
value[ $scope.tickProperty ] = false;
}
}
});
break;
case 'RESET':
angular.forEach( $scope.filteredModel, function( value, key ) {
if ( typeof value[ $scope.groupProperty ] === 'undefined' && typeof value !== 'undefined' && value[ $scope.disableProperty ] !== true ) {
temp = value[ $scope.indexProperty ];
value[ $scope.tickProperty ] = $scope.backUp[ temp ][ $scope.tickProperty ];
}
});
break;
case 'CLEAR':
$scope.tabIndex = $scope.tabIndex + 1;
break;
case 'FILTER':
$scope.tabIndex = helperItems.length - 1;
break;
default:
}
}
// just to create a random variable name
genRandomString = function( length ) {
var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
var temp = '';
for( var i=0; i < length; i++ ) {
temp += possible.charAt( Math.floor( Math.random() * possible.length ));
}
return temp;
}
// count leading spaces
$scope.prepareGrouping = function() {
var spacing = 0;
angular.forEach( $scope.filteredModel, function( value, key ) {
value[ $scope.spacingProperty ] = spacing;
if ( value[ $scope.groupProperty ] === true ) {
spacing+=2;
}
else if ( value[ $scope.groupProperty ] === false ) {
spacing-=2;
}
});
}
// prepare original index
$scope.prepareIndex = function() {
ctr = 0;
angular.forEach( $scope.filteredModel, function( value, key ) {
value[ $scope.indexProperty ] = ctr;
ctr++;
});
}
// navigate using up and down arrow
$scope.keyboardListener = function( e ) {
var key = e.keyCode ? e.keyCode : e.which;
var isNavigationKey = false;
// ESC key (close)
if ( key === 27 ) {
$scope.toggleCheckboxes( e );
}
// next element ( tab, down & right key )
else if ( key === 40 || key === 39 || ( !e.shiftKey && key == 9 ) ) {
isNavigationKey = true;
prevTabIndex = $scope.tabIndex;
$scope.tabIndex++;
if ( $scope.tabIndex > $scope.formElements.length - 1 ) {
$scope.tabIndex = 0;
prevTabIndex = $scope.formElements.length - 1;
}
while ( $scope.formElements[ $scope.tabIndex ].disabled === true ) {
$scope.tabIndex++;
if ( $scope.tabIndex > $scope.formElements.length - 1 ) {
$scope.tabIndex = 0;
}
}
}
// prev element ( shift+tab, up & left key )
else if ( key === 38 || key === 37 || ( e.shiftKey && key == 9 ) ) {
isNavigationKey = true;
prevTabIndex = $scope.tabIndex;
$scope.tabIndex--;
if ( $scope.tabIndex < 0 ) {
$scope.tabIndex = $scope.formElements.length - 1;
prevTabIndex = 0;
}
while ( $scope.formElements[ $scope.tabIndex ].disabled === true ) {
$scope.tabIndex--;
if ( $scope.tabIndex < 0 ) {
$scope.tabIndex = $scope.formElements.length - 1;
}
}
}
if ( isNavigationKey === true ) {
e.preventDefault();
e.stopPropagation();
// set focus on the checkbox
$scope.formElements[ $scope.tabIndex ].focus();
// css styling
var actEl = document.activeElement;
if ( actEl.type.toUpperCase() === 'CHECKBOX' ) {
$scope.setFocusStyle( $scope.tabIndex );
$scope.removeFocusStyle( prevTabIndex );
}
else {
$scope.removeFocusStyle( prevTabIndex );
$scope.removeFocusStyle( helperItemsLength );
$scope.removeFocusStyle( $scope.formElements.length - 1 );
}
}
isNavigationKey = false;
}
// set (add) CSS style on selected row
$scope.setFocusStyle = function( tabIndex ) {
angular.element( $scope.formElements[ tabIndex ] ).parent().parent().parent().addClass( 'multiSelectFocus' );
}
// remove CSS style on selected row
$scope.removeFocusStyle = function( tabIndex ) {
angular.element( $scope.formElements[ tabIndex ] ).parent().parent().parent().removeClass( 'multiSelectFocus' );
}
///////////////////////////////////////////////////////
//
// Logic starts here, initiated by watch 1 & watch 2.
//
///////////////////////////////////////////////////////
var tempStr = genRandomString( 5 );
$scope.indexProperty = 'idx_' + tempStr;
$scope.spacingProperty = 'spc_' + tempStr;
// set orientation css
if ( typeof attrs.orientation !== 'undefined' ) {
if ( attrs.orientation.toUpperCase() === 'HORIZONTAL' ) {
$scope.orientationH = true;
$scope.orientationV = false;
}
else {
$scope.orientationH = false;
$scope.orientationV = true;
}
}
// watch1, for changes in input model property
// updates multi-select when user select/deselect a single checkbox programatically
// https://github.com/isteven/angular-multi-select/issues/8
$scope.$watch( 'inputModel' , function( newVal ) {
if ( newVal ) {
$scope.refreshSelectedItems();
$scope.refreshOutputModel();
$scope.refreshButton();
if ( $scope.clickedItem !== null ) {
$timeout( function() {
$scope.onItemClick( { data: $scope.clickedItem } );
$scope.clickedItem = null;
}, 0 );
}
}
}, true);
// watch2 for changes in input model as a whole
// this on updates the multi-select when a user load a whole new input-model. We also update the $scope.backUp variable
$scope.$watch( 'inputModel' , function( newVal ) {
if ( newVal ) {
$scope.backUp = angular.copy( $scope.inputModel );
$scope.updateFilter();
$scope.prepareGrouping();
$scope.prepareIndex();
$scope.refreshSelectedItems();
$scope.refreshOutputModel();
$scope.refreshButton();
}
});
// watch for changes in directive state (disabled or enabled)
$scope.$watch( 'isDisabled' , function( newVal ) {
$scope.isDisabled = newVal;
});
// this is for touch enabled devices. We don't want to hide checkboxes on scroll.
angular.element( document ).bind( 'touchstart', function( e ) {
$scope.$apply( function() {
$scope.scrolled = false;
});
});
// also for touch enabled devices
angular.element( document ).bind( 'touchmove', function( e ) {
$scope.$apply( function() {
$scope.scrolled = true;
});
});
// for IE8, perhaps. Not sure if this is really executed.
if ( !Array.prototype.indexOf ) {
Array.prototype.indexOf = function(what, i) {
i = i || 0;
var L = this.length;
while (i < L) {
if(this[i] === what) return i;
++i;
}
return -1;
};
}
}
}
}]);